Padlock.



J. A. GIESB.

PADLOOK.

AYPLIOATION FILED un. s, 1911.

1,0313335. Patented July 2, 1912,.

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UNTTED sTATEs PATENT oinuoE.l

JAMES A. GIESE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE.ADA1VIS & WESTLAKE COMPANY, A CORPORATION OF ILLINOIS.

PADLOCK.

Specification of Letters Patent.

Patented July 2, 1912.

Application filed April 3, 1911. Serial No. 618,721.

To 'all whom it may concern.'

Be it known that I, JAMES A. GIEsE, a citizen of the United States, and resident of Chicago, county of Cook, and State of Illi- 5 nois, have invented certain new and useful Improvements in Padlocks, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to padlocks of the type in which the shackle is thrown open by a spring. Its objects are to generally improve devices of this character, and particularly to increase the security of such locks.

The invention consists of a device which is hereinafter described, and which is illustrated in the accompanying drawings, in which- Figure 1 is an elevation, partly in section, of the lock with one face of the casing removed, the shackle being closed; Fig. 2 is a similar view, the shackle being open and its movements being indicated in part by dotted lines; Fig. 3 is a sectional view on the line 3--3 of Fig. 1; Fig. 4 is a View in perspective of the bolt for locking the shackle; and Fig. 5 is a View in perspective of the keyactuated tumbler for controlling the bolt.

The casing 10 is of ordinary construction, and, as shown, is made of two pieces of pressed steel secured together by means of headed studs, such as 11, 12. The body of the shackle X is of ordinary loop form, and is pivoted at 13 between a pair of lugs, only one of which, 14, is shown, which rise from the top of the casing 10. The shackle has the usual apertured tongue 15 at its free end for entering the casing and receiving the bolt 16. The upper' face of the bolt bears and slides against the top wall 17 of the casing, and its rearward face bears and slides upon posts 18 and 12, each of which may be and, as shown, are adapted to secure the two sections' of the case together. The bolt is urged forward by a spring 19, shown as coiled about a post 20, one of its ends bear ing against a shoulder 21 of the bolt.

A tumbler 22 is suitably pivoted, as upon the post 12, and bears laterally against the bolt. This tumbler is apertured, as shown at 23, to receive a lug 24 projecting from the face of the bolt 16. rlwo recesses 25, 26, extend upwardly from the aperture 23, being spaced apart by a tongue 27. When the bolt is in its advance position the lug 24 is received within the forward recess 25, as shown in Fig. 1. When the bolt is in its retracted position the lug 24 is received within the recess 26, as shown in Fig. 2.

The forward end of the tumbler is depressed by the action of a spring. As shown, this action is secured by means of the spring 19, the reverse end 28 of which bears against a shoulder' 29 on the hub of the tumbler. The bolt and tumbler lie within the path of a key applied to the post 30; the bolt being provided with a shoulder 31 against which the key bears for releasing the shackle. The tumbler is provided with a downwardly projecting fin 32, adapted to enter a suitable recess in the key, and so formed that t-he key will force the tumbler upwardly for the purpose of disengaging itfrom the lug 24 before contact is made with the shoulder 31. As the bolt approaches the limit of its rearward movement the key passes beyond the fin 32 and allows the' tumbler to fall under the influence of the spring 19; and to facilitate this movement the rearward face of the tongue 27 is beveled, thereby insuring the engagement of the lug 24. with the recess 26 for the purpose of holding the bolt in its retracted position.

A finger 33 depends from the hub of the shackle into the casing and cooperates with an upstanding finger 34 on the `tumbler 22, bearing against the end thereof when the shackle is closed, as shown in Fig. l, and against the forward face thereof when the shackle is open, as shown in Fig. 2. lVhen the free end of the shackle is forced downward the finger 33, by its engagement with the lug 24, raises the forward end of the tumbler 22, thus releasing the bolt and allowing it to spring forward into the eye of the shackle. This movement is so timed that the tongue of the shackle is not called upon to perform the function of forcing the bolt back as it enters the case, as has heretofore been the common practice, and is therefore freed from objectionable wearing. A spring 35 bears against a beveled face of the shackle tongue 15 and throws the shackle out as soon as the bolt is withdrawn.

A common fault in locks of the type described has been that the tumbler and bolt could be easily shifted by a blow on the casing. In the construction herein described the relation of the tumbler to the bolt and to the finger depending from the hub of the shackle is such that the parts do not yield to such tampering.

I claim as my inventionl. In a padlock, in combination, a casing, a pivoted shackle, a spring advanced bolt having a key-engaging` shoulder, a springact'uated key-controlled tumbler positively engageable With the bolt in the advanced and retracted positions thereof, and a finger projecting from the shackle and engaging the tumbler to disconnect it from the bolt as the nose of the shackle is moved toward the cas ing.

2. In a padlock, in combination,v a casing,

' a pivoted shackle, a spring advanced bolt 15 having "a keyengaging shoulder, a spring actuated key-controlled tumbler positively engageable with the bolt in the advanced and retracted positions thereof, and a finger projecting from the shackle and engaging 20 the tumbler to disconnect it from the bolt as the shackle is .moved toward the casing.

JAMES A. GIESE. Witnesses: y

. LOUIS K. GILLsoN, E. M. KLA'roI-IER.

- Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

